← Back to Chemistry-I

Classification of Elements and Periodicity in Properties

301 Questions Start Errorless Test
All Exams Errorless
JEE (Main) 2017 Q76 Errorless Critical Thinking MCQ
The group having isoelectronic species is
A.
$O^{-}, F^{-}, Na, Mg^{+}$
B.
$O^{2-}, F^{-}, Na, Mg^{2+}$
C.
$O^{-}, F^{-}, Na^{+}, Mg^{2+}$
D.
$O^{2-}, F^{-}, Na^{+}, Mg^{2+}$
JEE (Main) 2015 Q77 Errorless Critical Thinking MCQ
The ionic radii (in ƅ) of $N^{3-}, O^{2-}$ and $F^{-}$ are respectively
A.
1.36, 1.40 and 1.71
B.
1.36, 1.71 and 1.40
C.
1.71, 1.40 and 1.36
D.
1.71, 1.36 and 1.40
CBSE PMT 2014; KCET 2018 Q78 Errorless Atomic and Ionic Radii MCQ
Which of the following orders of ionic radii is correctly represented
A.
$F^{-}, > O^{2-} > Na^{+}$
B.
$Al^{3+} > Mg^{2+} > N^{3-}$
C.
$H^{-} > H > H^{+}$
D.
$Na^{+} > F^{-} > O^{2-}$
NEET (Karnataka) 2013 Q79 Errorless Electron Affinity MCQ
Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O
A.
Al < Ca < O < C < F
B.
Al < O < C < Ca < F
C.
C < F < O < Al < Ca
D.
Ca < Al < C < O < F
MP PET 2013 Q80 Errorless Electron Affinity MCQ
The amount of energy released when $10^{6}$ atoms of iodine in vapour state are converted to $I^{-}$ ions is $4.9 \times 10^{-13} J$ . What will be electron affinity of iodine in eV per atom
A.
2.0
B.
2.5
C.
2.75
D.
3.06
JEE (Main) 2013 Q81 Errorless Critical Thinking MCQ
Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar
A.
$Ca < S < Ba < Se < Ar$
B.
$S < Se < Ca < Ba < Ar$
C.
$Ba < Ca < Se < S < Ar$
D.
$Ca < Ba < S < Se < Ar$
JEE (Main) 2013 Q82 Errorless Critical Thinking MCQ
The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of $Na^{+}$ will be
A.
-2.55 eV
B.
-5.1 eV
C.
-10.2 eV
D.
+2.55 eV
J & K CET 2012 Q83 Errorless Extended or Long Form of Periodic Table MCQ
Properties of elements are periodic function of number of present in the nucleus
A.
Protons
B.
Electrons
C.
Neutrons
D.
Mesons
CBSE PMT (Pre.) 2012 Q84 Errorless Atomic and Ionic Radii MCQ
Identify the wrong statement in the following
A.
Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius
B.
Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius
C.
Atomic radius of the elements increases as one moves down the first group of the periodic table
D.
Atomic radius of the elements decreases as one moves across from left to right in the $2^{\text{nd}}$ period of the periodic table
AMU (Med.) 2012 Q85 Errorless Ionisation Energy MCQ
The decreasing order of the first ionization energy (in $kJ \, mol^{-1}$ ) of He, Mg and Na is $He > Mg > Na$ . The increasing order of the $2^{nd}$ ionization energy (in $kJ \, mol^{-1}$ ) of these elements will be
A.
$Na < Mg < He$
B.
$Mg < Na < He$
C.
$Mg < He < Na$
D.
$Na < He < Mg$
J & K CET 2012 Q86 Errorless Valency and Oxidation State MCQ
The most stable oxidation state exhibited by thallium is
A.
0
B.
+1
C.
+2
D.
+3
WB JEE 2012 Q87 Errorless Valency and Oxidation State MCQ
The stable bivalency of Pb and trivalency of Bi is
A.
Due to $d$ contraction in $Pb$ and $Bi$
B.
Due to relativistic contraction of the 6s orbitals of $Pb$ and $Bi$ , leading to inert pair effect
C.
Due to screening effect
D.
Due to attainment of noble configuration
Odisha JEE 2012 Q88 Errorless Critical Thinking MCQ
Which of the following is not a periodic property
A.
Electronegativity
B.
Atomic volume
C.
Covalent radii
D.
Atomic mass
Odisha JEE 2011 Q89 Errorless Atomic and Ionic Radii MCQ
Which of the following has the largest size
A.
$S^{2-}$
B.
$Se^{2-}$
C.
$O^{2-}$
D.
$Te^{2-}$
CBSE PMT (Mains) 2010 Q90 Errorless Atomic and Ionic Radii MCQ
Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is
A.
$Mg < Ca < Cl < P$
B.
$Cl < P < Mg < Ca$
C.
$P < Cl < Ca < Mg$
D.
$Ca < Mg < P < Cl$
CBSE PMT (Mains) 2010 Q91 Errorless Atomic and Ionic Radii MCQ
Among the following which one has highest cation to anion size ratio
A.
CsI
B.
CsF
C.
LiF
D.
NaF
AMU (Engg.) 2010 Q92 Errorless Atomic and Ionic Radii MCQ
Which of the following sets will have highest hydration enthalpy and highest ionic radius
A.
Na and Li
B.
Li and Rb
C.
K and Na
D.
Cs and Na
AMU (Med.) 2010 Q93 Errorless Ionisation Energy MCQ
Among the following, the third ionisation energy is highest for
A.
Magnesium
B.
Boron
C.
Beryllium
D.
Aluminium
J & K CET 2010 Q94 Errorless Ionisation Energy MCQ
Which element is expected to have lowest first ionisation energy
A.
Sr
B.
As
C.
Xe
D.
S
CPMT 2010 Q95 Errorless Electronegativity MCQ
The chemical elements are arranged in the order of increasing electronegativities in the sequence
A.
$P, Si, Se, Br, N$
B.
$Si, Se, P, Br, N$
C.
$Si, P, Se, Br, N$
D.
$Se, P, Si, Br, N$
WB JEE 2010 Q96 Errorless Valency and Oxidation State MCQ
In a periodic table the basic character of oxides
A.
Increases from left to right and decreases from top to bottom
B.
Decreases from right to left and increases from top to bottom
C.
Decreases from left to right and increases from top to bottom
D.
Decreases from left to right and increases from bottom to top
AMU (Engg.) 2009 Q97 Errorless Extended or Long Form of Periodic Table MCQ
The element with atomic number 117 if discovered would be placed in
A.
Noble gas family
B.
Alkali family
C.
Alkaline earth family
D.
Halogen family
J & K CET 2009 Q98 Errorless Extended or Long Form of Periodic Table MCQ
Which one of the following is a 'd-block element'
A.
Gd
B.
Hs
C.
Es
D.
Cs
DCE 2009 Q99 Errorless Critical Thinking MCQ
Which is not the correct order for the stated property
A.
$Ba > Sr > Mg$ : atomic radius
B.
$F > O > N$ : first ionisation enthalpy
C.
$Cl > F > I$ : electron affinity
D.
$O > Se > Te$ : electronegativity
Kerala PMT 2008 Q100 Errorless Atomic and Ionic Radii MCQ
Which one of the ions in the table below would have the largest value of enthalpy of hydration Ionic radius in nm, Charge of ion
A.
0.0065, +2
B.
0.095, +1
C.
0.135, +2
D.
0.169, +1
E.
0.181, -1